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GHRS Instrument Science Report 073
"Short-Term Variations in GHRS Response: An Investigation into an
Apparent Anomaly"
D. Soderblom, J. Eisenhamer, S. Hulbert, C. Leitherer, M. McGrath,
L. Sherbert, and J. Skapik
May 7, 1996
Abstract
This is a report on an unusual phenomenon seen in a long series of
ACCUM observations of a star and of the wavelength calibration lamp.
The phenomenon is described, our initial hypotheses are explained and
rejected, and further investigations are presented. Our current best
hypothesis is that the changes seen in the lamp and star are
independent of one another and are due to known effects.